PLEASE NOTE: FOR CLEAR AUDIO ON THIS VIDEO, PLEASE USE HEADPHONES. Professor Peter Fonagy, Head of Research Department of clinical, educational and health psychology at UCL, discusses Cognitive Behavioural Therapy (CBT). He explains that CBT is a structured therapy that focuses on specific problems and is particularly effective in anxiety based mental health disorders, such as OCD and phobias. This video extract is part of the series of Wax/Owen Mental Health Forums held at the Duchess Theatre, London in September 2011.